Nipple shield



FIG. 1 is a front view of the design for a nipple shield;

FIG. 2 is a rear view thereof;

FIG. 3 is a left view thereof;

FIG. 4 is a right view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a top perspective view thereof; and,

FIG. 8 is a bottom perspective view thereof.

The broken lines shown in the figures depict portions of the nippleshield that form no part of the claimed design.

CLAIM The ornamental design for a nipple shield, as shown and described.